<template>
  <div>
    <TypeNav />
    <div class="main">
      <div class="py-container">
        <!--bread 面包屑，带有x的结构-->
        <div class="bread">
          <ul class="fl sui-breadcrumb">
            <li>
              <a href="#">全部结果</a>
            </li>
          </ul>
          <ul class="fl sui-tag">
            <!-- 分类的名字面包屑 -->
            <li class="with-x" v-if="searchParams.categoryName">{{ searchParams.categoryName }}<i @click="removeCategoryName">×</i></li>
            <!-- 关键字面包屑 -->
            <li class="with-x" v-if="searchParams.keyword">{{ searchParams.keyword }}<i @click="removeKeyword">×</i></li>
            <!-- 品牌面包屑 -->
            <li class="with-x" v-if="searchParams.trademark">{{ searchParams.trademark.split(':')[1] }}<i @click="removeTrademark">×</i></li>
            <!-- 售卖属性面包屑 -->
            <li class="with-x" v-for="(item, index) in searchParams.props" :key="index">{{ item.split(':')[1] }}<i @click="removeProps(index)">×</i></li>
          </ul>
        </div>

        <!--selector-->
        <!-- 自定义花四溅接收子组件传过来的数据 -->
        <SearchSelector @trademarkInfo="trademarkInfo" @attrValueInfo="attrValueInfo" />

        <!--details-->
        <div class="details clearfix">
          <div class="sui-navbar">
            <div class="navbar-inner filter">
              <!-- 价格结构 -->
              <ul class="sui-nav">
                <li :class="{ active: isOne }" @click="changeOrder('1')">
                  <a>综合<i v-show="isOne" class="iconfont" :class="{ 'icon-long-arrow-down': isDesc, 'iconfont icon-long-arrow-up': isAsc }"></i></a>
                </li>
                <li :class="{ active: isTwo }" @click="changeOrder('2')">
                  <a>价格<i v-show="isTwo" class="iconfont" :class="{ 'icon-long-arrow-down': isDesc, 'iconfont icon-long-arrow-up': isAsc }"></i></a>
                </li>
              </ul>
            </div>
          </div>
          <!-- 销售产品列表 -->
          <div class="goods-list">
            <ul class="yui3-g">
              <li class="yui3-u-1-5" v-for="item in goodsList" :key="item.id">
                <div class="list-wrap">
                  <div class="p-img">
                    <router-link :to="`/detail/${item.id}`">
                      <img v-lazy="item.defaultImg" />
                    </router-link>
                  </div>
                  <div class="price">
                    <strong>
                      <em>¥</em>
                      <i>{{ item.price }}</i>
                    </strong>
                  </div>
                  <div class="attr">
                    <a target="_blank" href="item.html" title="促销信息，下单即赠送三个月CIBN视频会员卡！【小米电视新品4A 58 火爆预约中】">{{ item.title }}</a>
                  </div>
                  <div class="commit">
                    <i class="command">已有<span>2000</span>人评价</i>
                  </div>
                  <div class="operate">
                    <a href="success-cart.html" target="_blank" class="sui-btn btn-bordered btn-danger">加入购物车</a>
                    <a href="javascript:void(0);" class="sui-btn btn-bordered">收藏</a>
                  </div>
                </div>
              </li>
            </ul>
          </div>
          <!-- 分页器 -->
          <Pagination :pageNo="searchParams.pageNo" :pageSize="searchParams.pageSize" :total="total" :continues="5" @getPageNo="getPageNo"></Pagination>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import SearchSelector from './SearchSelector/SearchSelector'
import { mapGetters, mapState } from 'vuex'
export default {
  name: 'Search',
  data() {
    return {
      searchParams: {
        category1Id: '',
        category2Id: '',
        category3Id: '',
        // 分类的名称
        categoryName: '',
        // 搜索关键字
        keyword: '',
        // 排序： 价格的升降序
        order: '1:desc',
        // 分页器： 第几页
        pageNo: 1,
        // 每一页展示数据的个数
        pageSize: 4,
        // 产品的详细数据
        props: [],
        // 品牌
        trademark: ''
      }
    }
  },
  components: {
    SearchSelector
  },
  // 需要在发送请求之前将searchParams的数据发送给服务器
  beforeMount() {
    // this.searchParams.category1Id = this.$route.query.category1Id
    // this.searchParams.category2Id = this.$route.query.category2Id
    // this.searchParams.category3Id = this.$route.query.category3Id
    // this.searchParams.categoryName = this.$route.query.categoryName
    // this.searchParams.keyword = this.$route.params.keyword
    // 利用ES6的Object.assigin（）进行数组合并，名称相同，后面的参数覆盖签名的参数， 名称不同，原封不动合并
    Object.assign(this.searchParams, this.$route.params, this.$route.query)
  },
  mounted() {
    // 需要在发送请求之前将searchParams的数据发送给服务器
    this.getData()
  },
  computed: {
    ...mapGetters(['goodsList']),
    isOne() {
      return this.searchParams.order.indexOf('1') !== -1
    },
    isTwo() {
      return this.searchParams.order.indexOf('2') !== -1
    },
    isAsc() {
      return this.searchParams.order.indexOf('asc') !== -1
    },
    isDesc() {
      return this.searchParams.order.indexOf('desc') !== -1
    },
    // 获取分页器总页数
    ...mapState({
      total: (store) => store.search.searchList.total
    })
  },
  methods: {
    getData() {
      this.$store.dispatch('searchList', this.searchParams)
    },
    // 删除分类名字的面包屑
    removeCategoryName() {
      // 全部置空回到默认参数状态，再次发送请求更改页面
      // this.searchParams.categoryName = ''
      // this.searchParams.category1Id = ''
      // this.searchParams.category2Id = ''
      // this.searchParams.category3Id = ''

      // 换成undefined可以在发给服务器的时候不用带过去，节约网络资源
      this.searchParams.categoryName = undefined
      this.searchParams.category1Id = undefined
      this.searchParams.category2Id = undefined
      this.searchParams.category3Id = undefined
      this.getData()

      // 还要更改地址的数据
      // 判断是否有params参数（keyword），如果有需要保留
      if (this.$route.params) {
        this.$router.push({ name: 'Search', params: this.$route.params })
      }
    },
    // 删除关键字的面包屑
    removeKeyword() {
      this.searchParams.keyword = undefined
      this.getData()
      // 通知header组件删除搜索框里的关键字  1.在main.js里注册全局时间总线 2.当前组件发送事件 3.header组件接收事件
      this.$bus.$emit('remove')
      // 更改地址栏的数据
      if (this.$route.query) {
        this.$router.push({ name: 'Search', query: this.$route.query })
      }
    },
    // 自定义事件接收子组件传值trademark
    trademarkInfo(trademark) {
      //  整理数据发送个请求
      // item品牌参数: "ID:品牌名称"
      this.searchParams.trademark = `${trademark.tmId}:${trademark.tmName}` // 不能有空格，否则更改不了数据
      this.getData()
    },
    // 删除品牌的面包屑
    removeTrademark() {
      this.searchParams.trademark = undefined
      this.getData()
    },
    // 自定义事件接收子组件传值
    attrValueInfo(attr, attrValue) {
      const props = `${attr.attrId}:${attrValue}:${attr.attrName}`
      // 整理数据发送请求
      // 判断数组里是否有相同内容，数组去重
      if (this.searchParams.props.indexOf(props) === -1) {
        this.searchParams.props.push(props)
      }
      this.getData()
    },
    // 删除售卖属性的面包屑
    removeProps(index) {
      // 删除数组中选中的项
      this.searchParams.props.splice(index, 1)
      this.getData()
    },
    changeOrder(flag) {
      // flag标识 用来判断点击的是综合（1） 还是价格（2）
      // 获取点击前的状态
      const orginOrder = this.searchParams.order
      const orginFlag = orginOrder.split(':')[0]
      const orginSort = orginOrder.split(':')[1]
      let newOrder = ''
      if (orginFlag === flag) {
        newOrder = `${orginFlag}:${orginSort === 'desc' ? 'asc' : 'desc'}`
      } else {
        newOrder = `${flag}:${'desc'}`
      }
      // 将点击后的值更改发送服务器
      this.searchParams.order = newOrder
      this.getData()
    },
    // 自定义事件回调函数
    getPageNo(pageNo) {
      this.searchParams.pageNo = pageNo
      this.getData()
    }
  },
  watch: {
    // 由于请求放在mounted中，只能发送一次，应该对用户的操作（即数据的改变）进行监听，当数据改变后应该再次发送请求，更该页面内容
    $route(newValue, oldValue) {
      // 当数据改变时，再次整合数据发送给服务器, 只有再次发送请求才会改变页面
      Object.assign(this.searchParams, this.$route.params, this.$route.query)
      this.getData()
      // 用户操作完后，应该清空category1Id、category2Id、category3Id的内容，其他内容在用户二次操作后会自动覆盖，但category1 2 3Id 在操作时有不同的选择，可能不会覆盖，所以直接清空，避免给此次操作带来影响
      // this.searchParams.category1Id = ''
      // this.searchParams.category2Id = ''
      // this.searchParams.category3Id = ''
      this.searchParams.category1Id = undefined
      this.searchParams.category2Id = undefined
      this.searchParams.category3Id = undefined
    }
  }
}
</script>

<style lang="less" scoped>
.main {
  margin: 10px 0;

  .py-container {
    width: 1200px;
    margin: 0 auto;

    .bread {
      margin-bottom: 5px;
      overflow: hidden;

      .sui-breadcrumb {
        padding: 3px 15px;
        margin: 0;
        font-weight: 400;
        border-radius: 3px;
        float: left;

        li {
          display: inline-block;
          line-height: 18px;

          a {
            color: #666;
            text-decoration: none;

            &:hover {
              color: #4cb9fc;
            }
          }
        }
      }

      .sui-tag {
        margin-top: -5px;
        list-style: none;
        font-size: 0;
        line-height: 0;
        padding: 5px 0 0;
        margin-bottom: 18px;
        float: left;

        .with-x {
          font-size: 12px;
          margin: 0 5px 5px 0;
          display: inline-block;
          overflow: hidden;
          color: #000;
          background: #f7f7f7;
          padding: 0 7px;
          height: 20px;
          line-height: 20px;
          border: 1px solid #dedede;
          white-space: nowrap;
          transition: color 400ms;
          cursor: pointer;

          i {
            margin-left: 10px;
            cursor: pointer;
            font: 400 14px tahoma;
            display: inline-block;
            height: 100%;
            vertical-align: middle;
          }

          &:hover {
            color: #28a3ef;
          }
        }
      }
    }

    .details {
      margin-bottom: 5px;

      .sui-navbar {
        overflow: visible;
        margin-bottom: 0;

        .filter {
          min-height: 40px;
          padding-right: 20px;
          background: #fbfbfb;
          border: 1px solid #e2e2e2;
          padding-left: 0;
          border-radius: 0;
          box-shadow: 0 1px 4px rgba(0, 0, 0, 0.065);

          .sui-nav {
            position: relative;
            left: 0;
            display: block;
            float: left;
            margin: 0 10px 0 0;

            li {
              float: left;
              line-height: 18px;

              a {
                display: block;
                cursor: pointer;
                padding: 11px 15px;
                color: #777;
                text-decoration: none;
              }

              &.active {
                a {
                  background: #e1251b;
                  color: #fff;
                }
              }
            }
          }
        }
      }

      .goods-list {
        margin: 20px 0;

        ul {
          display: flex;
          flex-wrap: wrap;

          li {
            height: 100%;
            width: 20%;
            margin-top: 10px;
            line-height: 28px;

            .list-wrap {
              .p-img {
                padding-left: 15px;
                width: 215px;
                height: 255px;

                a {
                  color: #666;

                  img {
                    max-width: 100%;
                    height: auto;
                    vertical-align: middle;
                  }
                }
              }

              .price {
                padding-left: 15px;
                font-size: 18px;
                color: #c81623;

                strong {
                  font-weight: 700;
                }
              }

              .attr {
                padding-left: 15px;
                width: 85%;
                overflow: hidden;
                margin-bottom: 8px;
                min-height: 38px;
                cursor: pointer;
                line-height: 1.8;
                display: -webkit-box;
                -webkit-box-orient: vertical;
                -webkit-line-clamp: 2;

                a {
                  color: #333;
                  text-decoration: none;
                }
              }

              .commit {
                padding-left: 15px;
                height: 22px;
                font-size: 13px;
                color: #a7a7a7;

                span {
                  font-weight: 700;
                  color: #646fb0;
                }
              }

              .operate {
                padding: 12px 15px;

                .sui-btn {
                  display: inline-block;
                  padding: 2px 14px;
                  box-sizing: border-box;
                  margin-bottom: 0;
                  font-size: 12px;
                  line-height: 18px;
                  text-align: center;
                  vertical-align: middle;
                  cursor: pointer;
                  border-radius: 0;
                  background-color: transparent;
                  margin-right: 15px;
                }

                .btn-bordered {
                  min-width: 85px;
                  background-color: transparent;
                  border: 1px solid #8c8c8c;
                  color: #8c8c8c;

                  &:hover {
                    border: 1px solid #666;
                    color: #fff !important;
                    background-color: #666;
                    text-decoration: none;
                  }
                }

                .btn-danger {
                  border: 1px solid #e1251b;
                  color: #e1251b;

                  &:hover {
                    border: 1px solid #e1251b;
                    background-color: #e1251b;
                    color: white !important;
                    text-decoration: none;
                  }
                }
              }
            }
          }
        }
      }

      .page {
        width: 733px;
        height: 66px;
        overflow: hidden;
        float: right;

        .sui-pagination {
          margin: 18px 0;

          ul {
            margin-left: 0;
            margin-bottom: 0;
            vertical-align: middle;
            width: 490px;
            float: left;

            li {
              line-height: 18px;
              display: inline-block;

              a {
                position: relative;
                float: left;
                line-height: 18px;
                text-decoration: none;
                background-color: #fff;
                border: 1px solid #e0e9ee;
                margin-left: -1px;
                font-size: 14px;
                padding: 9px 18px;
                color: #333;
              }

              &.active {
                a {
                  background-color: #fff;
                  color: #e1251b;
                  border-color: #fff;
                  cursor: default;
                }
              }

              &.prev {
                a {
                  background-color: #fafafa;
                }
              }

              &.disabled {
                a {
                  color: #999;
                  cursor: default;
                }
              }

              &.dotted {
                span {
                  margin-left: -1px;
                  position: relative;
                  float: left;
                  line-height: 18px;
                  text-decoration: none;
                  background-color: #fff;
                  font-size: 14px;
                  border: 0;
                  padding: 9px 18px;
                  color: #333;
                }
              }

              &.next {
                a {
                  background-color: #fafafa;
                }
              }
            }
          }

          div {
            color: #333;
            font-size: 14px;
            float: right;
            width: 241px;
          }
        }
      }
    }
  }
}
</style>
